allow

• vt.許可する；与える；認める
• 許可する；考慮する

1.接頭辞al-はad-「行く」と同じ。 laud-「称賛する」という語根は、語源的にはlaudable「称賛する、許可する」と同じ。語源的にはlaudable。

2.接頭辞al-はad-と同じ「行く」。 語源のloc-は置く、割り当てるで、語源的にはlocateと同じ。allowance（補助金）から派生した。

allow

allow: [14] Allow comes ultimately from two completely different Latin verbs, allaudāre and allocāre, which became blended in Old French alouer. The first, allaudāre, was based on laudāre ‘praise’ (source of English laud, laudable, and laudatory); the second, allocāre (source of English allocate [17]) on locāre ‘place’.

The formal similarity of the Latin verbs gradually drew their meanings closer together. The notion of ‘placing’, and hence ‘allotting’ or ‘assigning’, developed via the now obsolete ‘place to somebody’s credit’ to ‘take into account, admit’. Meanwhile, the idea of ‘praising’ moved through ‘commending’ or ‘approving’ to ‘accepting as true or valid’, and ultimately to ‘permitting’.
=> allocate, laudable, location

allow (v.)

early 14c., allouen, "to commend, praise; approve of, be pleased with; appreciate the value of;" also, "take into account or give credit for," also, in law and philosophy, "recognize, admit as valid" (a privilege, an excuse, a statement, etc.). From late 14c. as "sanction or permit; condone;" in business use from early 15c.

The Middle English word is from Anglo-French alouer, Old French aloer, alloiier (13c.) "allot, apportion, bestow, assign," from Latin allocare (see allocate). This word in Old French was confused and ultimately merged with aloer; alloer "to praise, commend," from Latin allaudare, adlaudare, compound of ad- "to" (see ad-) + laudare "to praise" (see laud). From the first word came the sense preserved in allowance as "money granted;" from the second came its meaning "permission based on approval."

Between the two primary significations there naturally arose a variety of uses blending them in the general idea of assign with approval, grant, concede a thing claimed or urged, admit a thing offered, permit, etc., etc. [OED].

Related: Allowed; allowing.

1. They will not allow your more way-out ideas to pass unchallenged.

彼らはあなたのような奇妙な考えを見逃すことはありません。

2.Police warned motorrists to allow extra time to get to work.

警察は運転者に出勤するために余裕を持つよう警告した。

3.Why should a successful company allow another firm to pick its brains？

なぜ成功した企業が他の会社に教えを請うことを許可しなければならないのか。

4.The decision to allow more offshore oil drilling angered some Californians.

近海石油掘削をより多く許可する決定はカリフォルニア人を怒らせた。

5.He promised to allow justice to run its course unimpeded.

彼は司法正義を阻害されずに伸張させることを約束した。